Robert de barril



(No Model.) RI DE BARRIL.

PHOTOGRAPHIG CAMERA.

No. 475,919. Patented May 31, 1892.

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l l l UNTTED STATES PATENT OFFICE.

ROBERT DE BARRIL, OF NE YORK, N. Y.

PHOTOGRAPHIC CAMERA.

SPECIFICATION forming part of Letters Patent No. 475,919, dated May 31,1892.

Application filed August 8, 1891.

To aZZ whom it may concern:

Be it known that l, ROBERT DE BAnniL, of the city and county ofNew York,in the State of New York, have invented a new and useful Improvement inPhotographic Cameras, of which the following is a specification.

My invention relates to an improvementin photographic cameras of thedetective type in which provision is made for making several exposuresin succession without changing the position of the plate-holder.

A practical embodiment of my invention is represented in theaccompanying drawings, in Whicl Figure 1 is a view of the camera infront elevation, a portion of the front of the box being removed. Fig. 2is a view in rear elevation, the back of the box being removed. Fig. 3is a transverse vertical section through a plane immediately to the rearof the front of the box and showing the diaphragm partially broken away.Fig.4is a view in transverse vertical section through line .00 r of Fig.2, and Fig. 5 is a view in detail of the escapement. for operating thelenscarrier and shutter.

The box A is represented as of oblong rectangular form, such as iscommon, and is provided with a front a and top A, shown in in thepresent instance as hinged at thefront at a, so that it may be swungopen at pleasure. The plate-holder support is represented by B and issecured within the box in the desired adjustment toward and away fromthe front by means of a set-screw b, which extends through an elongatedslot a in the bottom of the box into engagement with the base of theholder. A clamping-spring 1) serves to hold the plate-holder firmly toits support. Several openings N-in the present instance four openthrough the support B toward the front for the purpose of admittinglight to the several plates or several portions of a single plate, whichmay be carried by the plate-holder of well-known or approved form, theposition of which is indicated in dotted lines in Fig. 4. A bellows Osurrounds the series of openings b and shuts out the light thereto,excepting through the lens, as is common. The front a has journaledtherein a rotary disk D, carrying the lens d, and a 1'0- tary shutter E,provided with an opening 6.

Serial No. 402.069. (N0 model.)

The disks D and sh utterE are loosely mounted upon a winding-spindle Fand are actuated the former by means of a spring d and thclatter bymeans of a spring 0', one end of each of the springs being connected tothe spindle F and the otherend to its respective disk or shutter. Aratchet-wheelf is fixed tonotate with the spindle F, and a pawl f,mounted on the inner face of the front a, is adapted to engage the teethof the ratchet-wheel f and prevent the spindle from rotating under thetension of the springs. The disks D and E are each provided with pinsprojecting from their peripheries, those upon the former being denotedby d and those upon the latter being denoted by 6 the number of pinscorresonding to the number of exposures which are to be made during asingle revolution of the diskin the present instance four. The rearportion of the front a is provided with openings a and the forwardportion of said front with corresponding openings a arranged inalignment with the openings b and the lens (1 is so located upon thedisk D that during the rotation of said disk it will present itselfsuccessivelyin alignment with the several openings a and a. The opening6 in the shutter E is also so located that during the rotation of theshutter E it will present itself successively in alignment with thesevera openings a and a and when at rest will be intermeditate betweenthe openings at and a It is intended that the lens shall be carriedsuccessively in front of the series of openings (4 and a and that whileit is allowed to rest in alignment with the openings the opening in theshutter shall pass it, admitting a flash of light therethrough, the lensitself beingallowed to pass to the next successive opening, while theopening in the shutter E is closed by the front of the box. To this endI employ an escapement consisting of ashort longitudinal reciprocatingbar or shaft G, adapted to rest in a suitable seat H, formed for it inthe casing in proximity to the peripheries of the disk D and shutter E,the said escapement being provided with wings orlugs g, g, and g spacedfrom each other and adapted to engage the pins upon the disks D and E,as follows:

Suppose the disk D, under the tension of its actuating-spring d, to restwith one of its pins annexe (Z in engagement with the wing g on theescapement and its lens in alignment with the openings in the front, andsuppose the disk E, under the tension of its actuatingspring e, to restWith one of its pins 0 in engagement with the wing g on the escapementand its opening 6 intermediate between the two openings in the front. Ifnow, the plateholder being in position, it is desired to make anexposure, the escapement G is pressed to the rear against the tension ofits returningspring g permitting the pin upon the shutter-disk E toescape over the top of the wing 1 and thereby allowing the shutter torotate under the tension of its spring, causing the opening 6 therein topass the openings in the front a and allow a flash of light to passthrough the front and through the lens d through one of the openings bto the exposed plate. This same depression of the escapement will alsopermit the pin of the disk D to escape over.the Wingg into engagementwith the wing g and will bring the wing ginto position toarrest themovementoftheshutterE by the engagement of a succeeding pin with thewing g. Upon the return movement of the cscapement under the influenceof its spring g the pin of the lens-carrying disk D will be allowed toescape past thelower end of the wing 1 and the lens Will thereby becarried forward in front of the next succeeding opening 1/ andcorresponding openings in the front. The same outward movement of theescapement will also permit the pin upon the shutter to escapeunderneath the wing g and into en gagement with the wing g in positionto be again released as soon as the escapement is depressed.\Vhenthelens-carryingdisk moves forward to present its lens before asucceeding opening, it is arrested in its movement by a succeeding pincoming into engagement with the wing g.

By a succession of inward pushes upon the escapement and thecorresponding outward movement of the escapement under the tension ofits spring a succession of exposures may be rapidly and successfullymade witl1- out moving or manipulating any other part of the camera.

For the purpose of regulating the amount of light which shall be allowedto enter through the openings a in the front I provide a diaphragm, inwhich are formed several series of openings corresponding to the numberof openings in the front proper and so arranged that the openingsof the desired size in each of the series may be simultaneouslypresented to the rear of the openings in the front. I have here shownthe diaphragm as a disk mounted loosely upon the winding-spindle F andprovided with aforward ly-extendin g pin 1', which projects through anelongated slot 01 in the front, so that the diaphragm may be moved tobring either one of the series of openings.

t", 1?, and in front of the corresponding openings in the front proper.

That I claim is- 1. The combination, with a plate-holder support and afront provided with a plurality of openings for the admission of light,of a rotary lens-carrier, a rotary shutter, means for holding thecarrier and shutter under tension, and means for releasing them atintervals to bring the lens and an opening in the shutter successivelyin alignment with the openings in the front, substantially as set forth.

2. The combination,with the plate-holder support and a front providedwith a plurality of openings for the admission of light, of awinding-spindle, a rotary lens-carrier and retary shutter, both looselymounted on the spindle, actuating-springs con nectin g the lens-earrierand shutter with the winding-spindle, and an escapement under thecontrol of the operator to bring the lens and an opening in the sh utteralternately in alignment with the openings in the front, substantiallyas set forth.

3. The combination, with the plate-holder support-and the front providedwith a plurality of openings, of a diaphragm provided with series ofdifferent-sized openings, one series for each opening in the front,means for rocking the auxiliary front to bring the different openings ofeach series in alignment with the openings in the front, a rotarylens-carrier, a rotary shutter, and means for operating them,substantially as set forth.

ROBERT DE BARRTL.

Witnesses:

FREDK. HAYNES, K. E. PnMBLnToN.

